Focal K2 POWER M SUB 5 KM

Subwoofer

5″ / 154 mm
Nominal diameter
65 Hz
Resonance
1.0
Q factor
79 dB
Sensitivity
400 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
78.5
dB
Frequency response
35 - 250
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
65.0
Hz
Mechanical quality factor
QMS
5.00
Electrical quality factor
QES
1.30
Total quality factor
QTS
1.00

Large signal parameters

Power handling
P
200
W
Program power
Pmax
400
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz, estimated)
LE
0.45
mH
VC Diameter
60
mm

Magnet

Force factor
Bl
7.0
N/A
Motor constant
Bl/√RE
4.04
N/√W

Diaphragm

Effective diameter
110
mm
Effective area
SD
95
cm²
Moving mass
MMS
51
g
Moving mass (without air load)
MMD
50.3
g
Material
Kevlar Sandwich

Suspensions

Stiffness
KMS
8.33
N/mm
Compliance
CMS
120
µm/N
Equivalent volume to the compliance
VAS
1.5
L
Mechanical resistance
RMS
4.17
N·s/m
Surround material
TMD

Dimensions

Nominal diameter
5
154
mm
Overall diameter
154
mm
Baffle cutout diameter
130
mm
Mounting depth
69
mm
Volume occupied by the driver (estimated)
0.91
L
Net weight
2.2
kg
Focal SUB 5 KM SPL & Impedance
Focal SUB 5 KM Dimensions

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fS
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SD
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QTS
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xmax
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Bl/√RE
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Pmax
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